Apple as the habit to silently change it’s line, and everybody seems to expect the new MacBook Pros, with Core i5 and Core i7 CPU (maybe Core i3 for 13″), with Radeon HD 5xxx Mobile GPU…
Maybe some of the parts are not available, such as some Radeon GPU, or some new Core i5 Mobile CPU (typically Core i5-540M) ? or USB3.0 chips?
That’s because when Apple silently changes computer hardware, it does it when the unit are available on AppleStore, online and physicial stores, not doing announcement of product shipping some months after, and totally unavailable. It might do it for new products such as for the iPhone or iPad, but not when upgrading existing line of product.
So we will all stay and hold our breath each tuesday until the new MacBook Pro will be there… then I will brag about how great was the old model, that I prefer to the new one, while dreaming of buying a new one 
I read a post this morning, and found it incredible: Lower Merion School District (PA) shipped PC to their students with a spying software inside, to enable school administration to be able to see and ear anything that will be in the same room than the webcam-equipped laptop. And it wasn’t an error or a unknown malware, it was organized by the school, and actively used to monitor student, their friends, girl-friends/boy-friends, family at home or anywhere by the school administration.
No notice has been issued to students and their families, no authorization has been asked nor granted, and anyway, I doubt that even if authorized by the student it might have been allowed by law: spying people at their home, at the coffee when using their laptops, at any moment.
They even took pictures and videos of student naked or “having improper behavior” at their home. How is it possible to allow that?
I don’t understand how all this may have happened, what foolish thinking they had, and how pervert they are to monitor student undressed, or with their partner, or having private family or friend discussion on any matter. This school cross the line voluntarily, and as a class-action is in it’s way, I hope justice will be severe.
PS: That’s one incredible feature I liked with the old FireWire iSight: when in off position, it’s clearly visible it’s off with a white lid closed in front of the lens! No way to activate it to see anything when lid is in place 
PS2: the laptop was in fact an Apple MacBook, distributed to 1800 students that were spied remotely!
I discovered that looking at iMac 21.5″ and 27″ with Core2 Duo 3.06Ghz, both equipped theorically with Radeon 4670HD, without another GPU or OpenCL processor…
In fact, they both use nVidia’s MCP79 chipset, that is described like that:
The MCP79 chipset is a single-chip solution for small form factor notebooks. There are six versions of the MCP79. All the versions include a DirectX 10 GeForce graphics core which supports Shader Model 4.0, NVIDIA’s VP3 video processor, Hybrid Power, Hybrid SLI, and Hybrid Performance.
All versions of MCP79 includes a DirectX 10 GeForce graphics core (GeForce 9400M or GeForce 9300M). So this is disabled by Mac OS X on the new iMac instead of using it for OpenCL, as GeForce 9400M is far faster in real-world OpenCL processing than Radeon 4670HD due to it’s archiecture (tehnically: support of unified read-write in GPU SM shared-memory).
I don’t understand why Apple is using a chipset that is great for OpenCL processing, with peak performance-level of 40 Gflops (Core2 Duo 3.06Ghz peak performance is 24.28 GFlops, 3.33Ghz version reach 26.64), and enable good use of OpenCL, aggregating the computing power of CPU + GPU to sometimes double the performance-level of CPU-alone.
This is truly disturbing, as the same chipset stay with GeForce 9400M active on a MacBook Pro when display is handled by GeForce 9600M GT, and both GPU are used by OpenCL!
Why Apple act so strangely with it’s hardware, paying for it, putting it on the computer, making the consumer pay for it finally… And disabling it!
The GeForce 8600GT is a 3 years old video cards, it was introduced in 2007 as middle-game videocard for casual gamers not willing to go to hi-resolution (such as full-hd displays) nor recent games (that are 3 years old games!)…
The GeForce 8600 GT is largely under Radeon 4670HD of today, 3X slower than Radeon 4850HD that juice the quad-core iMac. In fact it’s marginally faster than GeForce 9400M of Mac Mini and white MacBook, more processing power, but same memory bandwidth!
So why Apple is selling this old videocard dubbed as GT120 on MacPro? It has no sense!
The explanation came from Microsoft about the BSOD (Blue Screen Of Death) after it’s latest Windows XP security update: a majority of these Windows XP are infected by a rootkit. A Rootkit is a program that install itself over the kernel, and effectively hide it completely from kernel and nearly any Windows existing antivirus!
Put it simply and roughly: most Windows XP, even with antivirus installed and updated, have a rootkit virus that control the computer and enable anyone to get your payment informations (creditcard number, bank access code) or use your computer as a bot for Denial-of-service attacks.
And as I prefer to be direct: the whole security system in Windows, and in the antivirus that you might pay to protect it is just flawed!
PS: Happy to see Microsoft recognizing that antivirus doesn’t protect Windows effectively, and could not do it in any case. My Windows XP PC was pawn3d in 2005 and that’s why I switched to Mac OS X definitively!